List of magnetic storms in September 2011
Location — Umiujaq (geographic coordinates — 56.53 N -76.55 W | time zone UTC-05)
Days with magnetic storms — 6
09 September 2011 — Magnetic storm of level G3
10 September 2011 — Magnetic storm of level G1
12 September 2011 — Magnetic storm of level G1
17 September 2011 — Magnetic storm of level G2
26 September 2011 — Magnetic storm of level G4
28 September 2011 — Magnetic storm of level G1
Days with geomagnetic disturbances — 5
11 September 2011 — geomagnetic disturbances
13 September 2011 — geomagnetic disturbances
27 September 2011 — geomagnetic disturbances
29 September 2011 — geomagnetic disturbances
30 September 2011 — geomagnetic disturbances
Maximum of solar activity in September 2011
Solar radio flux (10.7 cm) = 190
Mean planetary A index = 67
Mean planetary Kp index = 8